OV 80IJTHEEN INDIA. 129 



described ; however, the surface of this latter shell had greatly suflPered in preparing 

 the hinge line, and a very close comparison is now not easily made out. Both forms 

 were found at the same locality and in the same rock. 



Jjocality. — Moraviatoor, in brown earthy limestone^ 



Formation, — Ootatoor group. 



8. Tellina [Paljeomceea] inconspicua, Soioerby, PL IV, Eigs. 6—8. 



1846. Psammohia? inconspicua, Sow., apud Forbes, Trans., Geol. Soc, London, vii, p. 142, pi. xv, fig. 18. 



1847. ? Tellina Grangei, d'Orb., Voy. Astrolabe, Pal^eont., pi. v, figs. 8-10. 



TelL testa ovata^ compressa, sub'(^qmlaterali, parte antica longiori^ paulo 

 anguBtata^ ad terminationem rotundata, parte postica breviori, late ac rotundate 

 trwYicata ; marginibus superioribus declivis, angulum 140° formantibus, margine 

 inferiori lente curvato ; stiperficie striis concentricis incrementi instructis ; plica- 

 t'ura posteriori sub-obsoleta, Cardo valv(B dextrcB dente unico bifido elongato 

 anteriori instrtwtus ; dentibus lateralibus in utraque valvct duobus^ in valva dextra 

 fortioribiis quam in v. sinistra; sinu pallii prof undo ^ lato, ascendent e^ ad termina- 

 tionem uniforme rotundato. 



This is a very characteristic form, and the second species of true Falceomcera, 

 The shell is transversally elongated, rather compressed, inequivalve, the anterior 

 part being somewhat longer than the posterior, though in some specimens the 

 difference is less conspicuous than in others. The anterior end is narrowly 

 rounded, the posterior rather broadly truncated. The surface of the valves 

 is finely concentrically striated. The lateral teeth are stronger in the right than in 

 the left valve, and of the cardinals I have only observed the long bifid tooth in the 

 right valve. 



The more regular wedge-shaped form and the almost total want of the posterior 

 plicature readily distinguish the present species from Fat. strigata^ Goldf. 

 D'Orbigny identifies his Tellina Grangei with this species, but I have some doubt 

 that the identification is correct. D'Orbigny's form is in some respect allied to 

 our variety of T, adpressa, but is considerably more inequilateral. I have seen 

 d'Orbigny's original in the Jardin des plantes at Paris, but the shell is so small 

 and indistinct that, I confess, I am not acquainted with any of our Indian Tellince 

 which I could confidently identify with it, and if the very young shell from which 

 d'Orbigny has described his species be really the same as P. inconspicua, it would 

 show that the posterior end becomes less distinctly ridged with advancing age. 



Focalities,—Alu.ndMiaipooTa>m. and Serdamungalum, in whitish calcareous and 

 bluish sandstone. 



Formation, — Trichinopoly group. 



2i 



